Getting rid of quirks will definitely have that effect, but you could just get rid of quirks and not have a skill tree. So let's consider just the skill tree for a second.
There are something like seventy five semi-must-have points in lower chassis, survival, infotech and mech ops. Mech ops is required for almost any build, except I suppose a very cool gauss sniper build. Infotech is just required, full stop. Survival could be forgone on some sniper builds, as could lower chassis, but it seems really questionable and I doubt in practice that you'll see many people skipping out on this. The only sniper builds I can really even see benefitting from skipping out on the other trees are the dual guass-dual PPC type builds. For those, you could imagine sacrificing survivability for the PPC nodes.
In the main, this leads me to expect that we will only see diversity in which firepower tree the remaining points get dumped into. I would be really curious to see the PTR histogram of skill node choices to see whether my estimations are correct.
Edited by czAbsolute, 10 February 2017 - 12:28 PM.